Device for stringing glass bodies on a mandrel



vJallb, 1933. J, ANINGA I 1,892,744

' DEVICE FOR STRINGING GLASS BODIES 0N A MANDREL Filed June 15, 1931 2Sheets-Sheet 1,

Jan. 3, 1933. J; ANlNGA 1,892,744

DEVICE FOR STRINGING GLASS BODIES vON A MANDREL Filed June 15, 1951 v2Sheets-Sheet 2 Patented Jan. 3, 1933 UNITED STATES PATENT OFFICEJOHANNES ANINGA, E EINDHOVEN, NETHERLANDS, AsSIeNoE To N. v'.MAATscHAErrJ Tor EXPLOITATIE VAN UTTvrNmNGEN, ROTTERDAM, NETHERLANDSDEVICE FOR STRINGING GLASS BODIES ON A MANDREL Application led June 15,1931, Serial No. 544,631,

This inventionrelates to a device for the piling up of glass obgects ona stationary or rotary mandrel, which mandrel 1s given a vertical orinclined position and which is y supported by suit-able supportingdevices, the operation of which corresponds to that of a sluice system.Y

On this mandrel a plurality of ring-like glass objects may be piled oneupon the other, the glass objects, which preferably have been preheated,descending alongthe mandrel to the bottom thereof. They are then heatedagain at the lower side of the mandrel or in the vicinity thereof insuch manner that such glass objects fuse together. After such heatingthe plastic mass may be drawn from the lower end of the mandrel in theform of glass tubes or rods. As indicated above, the mandrel issupported by a series of vertically aligned supports, which successivelymove away from the mandrel to permit movement of the glass objectstherealong without destroying the supporting effect imparted to themandrel.

According to my invention such device comprises a carrier for the glassobject, which is arranged for movement in the longitudinal direction ofthe mandrel and which at the same time may be coupled to the motivatingmechanism for the supporting devices.

In a preferred form of construction of my invention the carrier hassubstantially the shape of a fork.

The opening and closing of the supporting devices for the mandrel, whichmay be constituted for example, of jaws engaging the mandrel, iseliected by a cam, to which the carrier may be ixed. This attachment maybe movable, for instance, in such manner that the carrier is alsomovable in a direction perpendicular to the mandrel. Such perpendicularmovement is provided for withdrawing the carrier from under the glassobject, so that it no longer supports the latter. The further advantagesof a device according to the invention will be more clearly understoodby reference to the accompanying drawings, wherein Fig. 1 is a sideelevation, partly in section,

and 'in the Netherlands June 27, 1930.

showing the mandrel together with the Supporting devices, which areconstituted, for example, by tong Fig. 2 is a plan view, showing thesupporting tongs, as wel-l as thecam 2O by which the said tongs areopened. The tongs are shown in opened position, through which openingthe fork-shaped carrier 2 may pass when moving along the mandrel.

Fig. 3 is a side view of the cam which 4causes the 'tongs to moverawayfrom each other against the action of aspring.

Fig. 1 shows a mandrel 1 supported by tong-shaped supporting devices 5which .surround the` mandrel and 'are arranged in the recessed portionsla of the mandrel. A carrier for; the Olass `objects is shown at 2. Asan example a glass body 3 `is shown, which body is slipped on `themandrel at 4. The carrier 2 ismovable in a direction perpendicularl tothe axis of the mandrel, and for this purpose is slidably mounted in thecam 20, which latter is shaped as a wedge and is movable along the screwspindle 1.6. As shown on the drawing the carrier is additionallysupported byan angle piece 22 .lixed to the cam. Two cams 24 are shownas being .secured directly to opposite sides of the carrier. If thecarrier occupies the lowermost position as shown in dotted lines in l,the cam 24: may be moved away from Ithe mandrel by a cam 25, which inturn is operated by a handle 27. Due to this move- 4ment `of the carrierit no Vlonger supports the yglass block. The cam 25 with its handle 27isfpivotally supported at 2S. i It is represented only schematically andmay be'constructed for automatic operation.

For clearness sake the process carried out by means of this device isbriefly set out hereinafter and at the same timethe advantage oit thecarrier will be better understood.

Fig. 1 shows the device in the position in which .the process begins. Inthe position of the carrier indicated in dotted lines the transport ofthe glass body, so faras it is effected by the device, stops. The screwspindle 16 is turned by the handle 17 through ythe intermediary of thetoothed wheels 14 and 15 which are supported in the blocks 18 and 19fixed to the column 13. Due to this construction the wedge-shaped cam 2Ois moved downwardly, together with the carrier 2 and the glass body. Thecam 20 moves the rolls 10 away from each other, owing to which the jawsor tongs 5A and 5B are opened so that the mandrel is released (see Fig.2). At the same time the cam together with the carrier and the body areallowed to pass between the jaws. After the cam and the carrier havepassed, the tongs 5A and 5B are closed by the action of a spring 23. Thealternative opening and closing of the successive supporting devicesconsequently resembles the movement of a row of sluices. Hence myreference to a sluice-system. The cam 20 keeps on descending, and theopening and closing is repeated at each of the following tong supports.If thereupon the carrier 2 in the position shown in Fig. 1 in dottedlines is withdrawn, the glass body is supported by the bodies previouslypiled up.

If the carriers were not provided as a support for the body, the glassbody at the vertical position of the mandrel would fall freely on itsway between two tongs and on the way along the mandrel preceding thefirst tong, and would consequently run the risk of breaking, bursting,or cracking when contacting the tongs 5. However, the fork-shapedcarrier effectively prevents this.

Fig. 3 shows more clearly the contour 20A of the cam 20, and in additionit shows that the forks of the carrier 2 slide in the slots 29 of thecam 20. It is observed that all of the tongs and the further mechanismsare ultimately supported by the column 13. `Thus it is possible to swingthe tongs away together with the mandrel, it being necessary to producethis effect only to remove the rod 7 shown in Fig. 1. This rod, which isalso shown in Fig. 2, serves as a stop for the set bolts 6 provided inthe jaws 5A and 5B. Due to this it is possible to adjust the position ofthe jaws with respect to the mandrel.

After the glass bodies have passed all of the tongs 5, the row of bodiesmoves further downward along the mandrel, and is locally very evenlyheated and then drawn from the enlarged end of the mandrel, wherebyglass tubes or rods are obtained.

What I claim is:

1. A device for piling up glass objects on a mandrel, comprising aplurality of devices for the support of the mandrel and beingsuccessively removable from the mandrel, whereby the next successivesupport serves as the support for said mandrel, and a carrier for theglass objects adapted to move longitudi- V nally along the mandrel.

2. A device for piling up glass objects on a mandrel, comprising aplurality of devices l for the support of the mandrel and beingsuccessively removable from the mandrel,

whereby the next successive support serves as the support for saidmandrel, a carrier for the glass objects adapted to move longitudinallyalong the mandrel, and actuating mechanism for the said carrier and towhich the said carrier is coupled.

3. A device for piling up glass objects on a mandrel, comprising aplurality of devices for the support of the mandrel and beingsuccessively removable from the mandrel, whereby the next successivesupport serves as the support for said mandrel, and a forkshaped carrierfor the glass objects adapted to move longitudinally along the mandrel.

1. A device for piling up glass objects on a mandrel, comprising aplurality of devices for the support of the mandrel and beingsuccessively removable from the mandrel, whereby the next successivesupport serves as the support for said mandrel, a movable cam, foreffecting the opening and closing of the supporting devices, and acarrier for the objects to be piled on the mandrel, said carrier beingmovably secured to said cam.

5. A device for piling up glass objects on a mandrel, comprising aplurality7 of devices for the support of the mandrel and beingsuccessively removable from the mandrel, whereby the next successivesupport serves as the support for said mandrel, a movable cam, foreffecting the opening and closing of the supporting devices, and acarrier for the objects to be piled on the mandrel, said carrier beingmovably secured to said cam, and

being adapted for movement perpendicular- I ly to the mandrel.

In testimony whereof I have signed my name to this speciiication.

JOHANNES ANINGA.

